googleyahoodevice_id.txt

Yes, Google has introduced an optional selfie video sign-in and recovery feature

3fa -3rd factor authentication Google mail should be a device id

Video can be breached

What is written can be read and replayed
Use only device id which cannot be copied

Use device id network mac id from bios below hardware abstraction layer
Cpu id
Cpu serial numbers

Before 25 years when ipv6 was developed
I suggested geo ip for security
the subnet mask can be converted to a geography mask.

1 billion people will die due to AI - youtube
1 billion hack will happen due to AI -- youtube

Google/yahoo/government site - 3fa should be changed to device id
Same to be done for banking app

The browser should return a mac id of the network(S)
in the machine.
At the time of setup this should be saved in the login database
This should be verified at each login.

You can allow maximum 1 mobile 1 tablet 1 laptop 1 desktop only
you have to restrict the source of login and stop login.
to email bank account and other government sites only 1 device per type